1211425 has 12 divisors (see below), whose sum is σ = 1535616. Its totient is φ = 947600.

The previous prime is 1211423. The next prime is 1211443. The reversal of 1211425 is 5241121.

It is not a de Polignac number, because 1211425 - 2¹ = 1211423 is a prime.

It is a super-3 number, since 3×1211425³ = 5333482204687171875, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 1211399 and 1211408.

It is not an unprimeable number, because it can be changed into a prime (1211423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 660 + ... + 1690.

It is an arithmetic number, because the mean of its divisors is an integer number (127968).

2^1211425 is an apocalyptic number.

It is an amenable number.

1211425 is a deficient number, since it is larger than the sum of its proper divisors (324191).

1211425 is a wasteful number, since it uses less digits than its factorization.

1211425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088 (or 1083 counting only the distinct ones).

The product of its digits is 80, while the sum is 16.

The square root of 1211425 is about 1100.6475366801. The cubic root of 1211425 is about 106.6020387587.

Adding to 1211425 its reverse (5241121), we get a palindrome (6452546).

The spelling of 1211425 in words is "one million, two hundred eleven thousand, four hundred twenty-five".